Class RingGSWAccumulatorCGGI

• Defined in File rgsw-acc-cggi.h

Inheritance Relationships

Base Type

• public lbcrypto::RingGSWAccumulator (Class RingGSWAccumulator)

Class Documentation

class lbcrypto::RingGSWAccumulatorCGGI : public lbcrypto::RingGSWAccumulator

Inheritence diagram for lbcrypto::RingGSWAccumulatorCGGI:

Collaboration diagram for lbcrypto::RingGSWAccumulatorCGGI:

Ring GSW accumulator schemes described in https://eprint.iacr.org/2018/421.pdf and https://eprint.iacr.org/2020/086.

Public Functions

RingGSWAccumulatorCGGI() = default

virtual RingGSWACCKey KeyGenAcc(const std::shared_ptr<RingGSWCryptoParams> &params, const NativePoly &skNTT, ConstLWEPrivateKey &LWEsk) const override

Key generation for internal Ring GSW as described in https://eprint.iacr.org/2018/421.pdf

Parameters

• params – a shared pointer to RingGSW scheme parameters

• skNTT – secret key polynomial in the EVALUATION representation

• LWEsk – the secret key

Returns

a shared pointer to the resulting keys

virtual void EvalAcc(const std::shared_ptr<RingGSWCryptoParams> &params, ConstRingGSWACCKey &ek, RLWECiphertext &acc, const NativeVector &a) const override

Main accumulator function used in bootstrapping - GINX variant

Parameters

• params – a shared pointer to RingGSW scheme parameters

• ek – the accumulator key

• acc – previous value of the accumulator

• a – value to update the accumulator with